Paper-making machine.



Patented Ian. 30, I900. A. W. CASE.

PAPER MAKING MACHINE.

(Application filed Apr. 6, 18994) (No Model.)

Wim 6S8 es lln'rrnn 'r'rns ALBERT IVILLARD CASE, OF HIGHLAND PARK, CONNECTICUT.

PAPER-MAKlNG MACHINE.

iQPECIFIGl'JTIOIq forming part of Letters Patent No. 642,083, dated January 30, 1900.

Application filed April 6, 1899. Serial No. 711,923. (No model.)

To (1, whom it rim/y concern.-

Be it known that I, ALBERT WILLARD CASE, a citizen of the United States, and a resident of Highland Park, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Paper- Making Machines, of which the following is a full, clear, and exact description, whereby any one skilled in the artcan make and use the same.

My invention relates more particularly to the class of paper-making machines in which a paper-making cylinder is employed; and the object of my invention is to provide a ma chine in which a paper may be made having a patterned surface formed in applying a layer of pulp directly upon another layer in building up the paper to the proper thickness; and to this end my invention consists in the combination of a paper-making cylinder having the usual wire and another cylinderhaving a pattern-wire, these cylinders being appurtenant to difierent vats, so that a variation may be made in the color of the layers formed on the respective cylinders; and it further consists in details of the several parts making up the structure as a whole and in the combination of such parts as hereinafter described, and more particularly pointed out in the claims.

Referring to the drawings, Figure l is a view in side elevation of a paper-making machine embodying my improvement with part shown in dotted outline. Fig. 2 is a detail view, in end elevation, of the machine, showing one manner of supporting a pattern cylinder. Fig. 3 is a detail view, in horizontal section, of a portion of the supplemental vat, showing the slide or removable end.

In the accompanying drawings the letter a denotes a vat in which the paper-making cylinders Z) 0 (Z are mounted in the usual manner and have the regular equipment of suction-pump for the cylinders, stuff-inlet for the vats, and paper-making wire on each cylinder. The coucher-rolls e, f, and g, appurpaper.

sheet or layer of material is taken up from each cylinder by the felt, the first layer coming from the first cylinder and the next layer being superimposed on the first. The two layers are firmly united in the further process of making the paperthat is, by passage through the squeeze-rolls or press-rolls and the drier. If the layer taken up from the first cylinder is of one color and the layer taken up from the second cylinder is of another color, then the paper formed of two layers Willbe finished in different colors on the opposite faces of the sheet. By making a pattern-wire on a cylinder and building on alayer of a different color from what maybe termed a baselayer a different pattern may be formed on the surface of the part in which the patternforming color is extremely prominent, and it in fact extends completely through the surface layer of the paper.

The object of my invention is to provide a paper-making machine in which all the advantages of this method of producing a paper of any desired pattern on its surface may be attained. It is obvious that if the pattern is formed on the surface of a papenmaking cylinder then in order to change the pattern the cylinder must be changed and as many different cylinders provided as there are patterns to be produced on the finished paper.

In the practice of my improvement I provide a separate vat i, in connection with which a pattern -wire 71;, formed as a continuous blank or apron, is used on the paper-making cylinders lm, suitably mounted in. the vat. Any desired number of these pattern-wire aprons can be furnished at a much less cost than can cylinders which must be altered each time it is desired to change a pattern, and the rolls in the supplemental pattern-Vat are so supported as to enable the pattern-wire apron to he slipped off sidewise from the rolls and a new apron fixed in its place.

The standard a is a heavy structure adapted to be securely fastened to the floor and with a central arm 77, extending horizontally from the side of the standard and terminating in a cross-piece n arranged vertically and having a bearing 0 at its upper end and a bearing 19 at its lower end for the reception of the shafts on which the cylinders tm turn. At the other end and in the standard nsimilar bearings 0 p are formed for the opposite ends of the cylinder-shafts. The end of the vatt' is made removable, but water-tight, preferably by forming it as a slide q, as shown, although any other method of arranging the end of the vat so that it may be removed may be employed. With the end q of this vat removed it is obvious that the pattern- Wire in the form of an apron may be easily slipped off from the rolls and another slipped upon the rolls, the position of the apron in the latter case when it is about to be put into place being indicated in dotted outline at the left in Fig. 2.

The term removable is used in the claims herein to denote that feature of construction which permits the removal of the wire or apron from the roll while the latter is maintained in place in the machine, and it is intended that such construction shall be given to the term in interpreting the claim. In order to provide for the proper tension on this apron, a tension-roll r is supported from pivot-bearings, preferably extensions on the end of the shaft of the upper roll Z, and the roll rests against the surface of the apron to a degree determined by the weight of the roller or an attached weight.

The coucher-roll g is arranged in usual contact with the upper one of the papermaking cylinders in the supplemental vat and the layer of paper taken up from the cylinder by the felt which passes over this coucher-roll is made in the form of the design or pattern determined by that on the pattern-apron 7c. The paper is taken from the felt in the usual manner after passing through the press-rolls.

It is obvious that changes may be made in the details of construction of the improved machine without departing from my invention, the main feature of which resides in providing the supplemental paper-making vat with two cylinders arranged to support a pattermapron which is removable from the rolls.

I claim as my invention 1. In combination in a paper-making machine, a paper-making cylinder adapted to form a layer of paper, a supplemental vat having a paper-making cylinder and a pattern-wire made in the form of an endless apron and removably secured to the cylinder.

2. In combination with a paper-making machine of ordinary construction, a supplemental vat having a paper-making cylinder, and a pattern-wire formed in the shape of an endless apron and means for removing the pattern-wire from the vat Without breaking its continuity.

3. In combination with a cylinder paper- -making machine of ordinary construction, a

A. WILLARD CASE.

Witnesses:

E. O. STANLEY, A. WELLS CASE. 

